A free tool to calculate your percentage increase or decrease.

## Some examples of percent changes

- An increase of 100% means that the total is 200% of the orginal amount, in other words, the quantity has doubled.
- An increase of 500% means the final amount is 6 times the original (100% + 500% = 600% = 6 times as large).
- A decrease of 60% means the final amount is 40% of the original (100% − 60% = 40%).
- A decrease of 100% means the final amount is
*zero*(100% − 100% = 0%).